Lazer Safe PCSS-A Series Technical Manual page 240

PCSS-A Series Technical Manual
14.22 Valve Monitoring Option 22
This option is used for monitoring the high speed solenoid valves and STO enable. Standard
inputs on the PCSS unit are provided for monitoring normally closed contacts for connections
to each of the high speed solenoid valves and STO enable as shown in
AIO.
An example of the conditions for this valve monitoring option can be seen in
STO Enable
Sol. Mon.
1 0
X X
0 1
Legend: 0 = Off or Low, 1 = On or High and X = No effect.
Details of the fault conditions associated with this option are shown in
Page 220
Original Language Version: 1.25
2 2
1 3 1 3
Figure 14-22: Valve Monitoring Option 22 (AIO Connections)
High speed
Sol. Mon. Valve Zero
X X No
1 0 No
0 1 Yes
Table 14-35: Valve Monitoring Option 22 Conditions
Valve Monitor – STO Enable
Valve Monitor – High Speed Y2
Valve Monitor – High Speed Y1
2
1 3
24VDC
0VDC
Description
STO enable switched on.
High speed solenoids switched on.
All monitored valves are switched off.
LS-CS-M-046
IOA – CN4
X23
12
X22
11
X21
10
X20
9
X19
8
X18
7
X17
6
X16
5
X15
4
X14
3
X13
2
X12
1
Figure 14-22 for the
Table 14-35.
Table 14-36.
Released: 12/09/2024